[Changeset] plotyy leaves traces of previous plots

[David Bateman]

John W. Eaton wrote:
> On 28-Mar-2008, Bateman David-ADB014 wrote:
>
> | Shai, Micheal,
> | 
> | John suggested I should direct a question at you and the rest of the maintainers list but what is the expected behavior of newplot in the case of plotyy and what is the correct means to detect that an axes forms part of a set of axes in a plotyy figure. The details of the conversation are below. John I don't have easy access to the patch I sent to newplot for discussion, so could you forward it?
> | 
>
> Here it is.
>
> jwe
>
>
>   
Here is an updated version (replaces the previous version) that also
fixes the issue of spurious tick marks in plotyy (Thanks Petr for the
help), and addresses the fact that the newplot change I proposed results
in the second axis of the plotyy being deleted and so the plotyy
function can't assume at any point that because an axis existed at the
start of the call it exists later on. This allows repeated calls the
plotyy to work correctly.

The remain issue is whether the manner to detect that the current axis
handle points to one of a plotyy set of axes handles is correct. I used
the activepositionproperty of the axis to do this, but I'm not sure this
is valid. So I'd appreciate feedback from Michael or Shai if you have
some advice on this point..

Regards
David

-- 
David Bateman                                David.Bateman at motorola.com
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Parc Les Algorithmes, Commune de St Aubin    +33 6 72 01 06 33 (Mob) 
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